Espresso/lib/stdio.c

#include <drivers/ps2_keyboard.h>
#include <fs/vfs.h>

#include <stdio.h>

extern bool ps2keyboard_initialized;

char getchar(void)
{
  if (ps2keyboard_initialized)
  {
    return get_char();
  }
  
  return '\0';
}

char* getstring(void)
{
  if (ps2keyboard_initialized)
  {
    return get_string();
  }
  
  return "HELLO\0";
}

char* fgets(char* buf, int n, FILE file)
{
  if (!buf || n <= 1 || file < 1)
  {
    return NULL;
  }

  int total_read = 0;
  char c;

  while (total_read < n - 1)
  {
    int bytes = read_file(file, &c, 1);

    if (bytes <= 0)
    {
      break; /* EOF or error */
    }

    buf[total_read++] = c;

    if (c == '\n')
    {
      break; /* Stop at newline */
    }
  }

  if (total_read == 0)
  {
    return NULL; /* Nothing read (e.g. EOF) */
  }

  buf[total_read] = '\0';
  return buf;
}